Figure 4From: New low-viscosity overlay medium for viral plaque assaysParallel plaque assays under methylcellulose (top panel) and Avicel RC-581 (bottom panel). Numbers depict concentrations of the MC and Avicel in the overlay. A/Memphis/14/96-M (H1N1); MDCK-SIAT1 cells in 6-well plates; immuno-staining (AEC).Back to article page